Determining a synchronization relationship

• US 8,988,489 B2
• Filed: 09/15/2010
• Issued: 03/24/2015
• Est. Priority Date: 09/15/2010
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Apostolopoulos, John G., Samadani, Ramin, Trott, Mitchell
• Primary Examiner(s): Nguyen, Joseph J
• Application Number:
  US12/883,150
• Publication Number:
  US 20120062690A1
• Time in Patent Office: 1,651 Days
• Field of Search: 348/43, 348/536, 348/51, 348/201, 348/14.08, 348/140
• US Class Current: 348/14.12
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04N 7/147 Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q
• CPC Class Codes: H04N 7/15 Conference systems

Abstract

A synchronization relationship determiner comprising an input visual information signal receiver configured to receive an input visual information signal, and a capture signal receiver configured to receive a capture signal generated by a capture device. The synchronization relationship determiner is configured to determine a synchronization relationship between the input visual information signal and the capture signal. The synchronization relationship determination is signal based.

Claims

1. A synchronization relationship determiner comprising:

an input visual information signal receiver configured to receive an input visual information signal; and

a capture signal receiver configured to receive a capture signal generated by a capture device, wherein said capture signal comprises video cross-talk, wherein said video cross-talk comprises back-scattered light, wherein said synchronization relationship determiner is configured to determine a synchronization relationship between said input visual information signal and said capture signal, wherein said synchronization relationship determination is signal based.

2. The synchronization relationship determiner of claim 1 comprising:

a time offset determiner configured to determine a time offset between said input visual information signal and said capture signal.

3. The synchronization relationship determiner of claim 1 comprising:

a mapping generator configured to generate a mapping between time intervals of said input visual information signal and said capture signal.

4. The synchronization relationship determiner of claim 1 comprising:

a best fit determiner configured to determine a best fit between a frame of said input visual information signal with a frame of said capture signal.

5. The synchronization relationship determiner of claim 4 wherein said best fit determiner is further configured to determine a best fit between a best blend for a sequential set of adjacent frames of said input visual information signal with a frame of said captured signal.

6. The synchronization relationship determiner of claim 1 comprising:

a best blend determiner configured to determine a best blend for a sequential set of adjacent frames of said input visual information signal, wherein said sequential set of said adjacent frames corresponds to a sequential set of adjacent frame intervals.

7. The synchronization relationship determiner of claim 1 is further configured to determine a synchronization relationship between an audio signal of said input visual information signal and an audio signal of said capture signal.

8. The synchronization relationship determiner of claim 1 is further configured to determine a synchronization relationship between frames of said input visual information signal and frames of said capture signal.

9. A computer-implemented method for determining a synchronization relationship, said method comprising:

receiving an input visual information signal, wherein a display signal is based on said input visual information signal;

receiving a capture signal generated by a capture device, wherein said capture signal comprises said display signal, wherein said display signal captured by said capture device is video cross-talk, wherein said video cross-talk is back-scattered light of said display signal; and

determining a synchronization relationship between said input visual information signal and said capture signal, wherein said determining said synchronization relationship is signal based.

10. The computer-implemented method of claim 9, wherein said determining a synchronization relationship between said input visual information signal and said capture signal comprises:

determining a synchronization relationship between an audio signal of said input visual information signal and an audio signal of said capture signal.

11. The computer-implemented method of claim 9, wherein said determining a synchronization relationship between said input visual information signal and said capture signal comprises:

determining a time offset between said input visual information signal and said capture signal.

12. The computer-implemented method of claim 11, wherein said determining a time offset between said input visual information signal and said capture signal comprises:

determining a best fit between a frame of said input visual information signal with a frame of said capture signal.

13. The computer-implemented method of claim 9, wherein said determining a synchronization relationship between said input visual information signal and said capture signal comprises:

generating a mapping between time intervals of said input visual information signal and said capture signal.

14. The computer-implemented method of claim 9, wherein said determining a synchronization relationship between said input visual information signal and said capture signal comprises:

determining a best blend for a sequential set of adjacent frames of said input visual information signal, wherein said sequential set of said adjacent frames corresponds to a sequential set of adjacent frame intervals; and

determining a best fit between said best blend for said sequential set of adjacent frames with a frame of said captured signal.